Paper V: Marine and Petroleum Geology 22(1-2), Rise, L.; Ottesen, D.; Berg, K. and Lundin, E., Large-scale development of the mid-Norwegian margin during the last 3 million years, pp. 33-44. Copyright 2005 Elsevier Science B.V., Amsterdam. The published version is available at: http://dx.doi.org/10.1016/j.marpetgeo.2004.10.010

Paper VI: Geology 34, Dowdeswell, J. A.; Ottesen, D. and Rise, L., Flow switching and large-scale deposition by ice streams draining former ice sheets, 313-316. Copyright 2006 Geological Society of America. Full-text not available due to publisher restrictions. The published version is available at: http://dx.doi.org/10.1130/G22253.1

Paper VII: Journal of Geophysical Research 111, F01016, Ottesen, D. and Dowdeswell, J. A., Assemblages of submarine landforms produced by tidewater glaciers in Svalbard, pp.1-16. Copyright 2006 American Geophysical Union (AGU). The published version is available at: http://dx.doi.org/10.1029/2005JF000330

Abstract:

This thesis is mainly about the dynamics of the palaeo-ice sheets that covered
Scandinavia, Barents Sea and Svalbard during the last glaciation. Morphological
interpretation of regional and detailed bathymetric data sets on the Norwegian shelf
from the North Sea (57°N) to Svalbard (80°N) has elucidated the ice-flow patterns
along the western margin of the Scandinavian and Barents/Svalbard ice sheets. About
20 cross-shelf troughs with glacial lineations are interpreted as former pathways for
fast-flowing ice streams. The two largest palaeo-ice streams were the Norwegian
Channel Ice Stream and Bear Island Ice Stream, each 150-200 km wide at their
mouths. Studies of large-scale margin morphology and seismic-reflection profiles
have identified large submarine fans at the mouths of several major cross-shelf
troughs.
Improved knowledge of the regional development of the margin, and detailed
morphological maps of the buried palaeo-surfaces, show that similar large-scale
glacial processes have been active in a substantial part of the Late
Pliocene/Pleistocene (c. last 3 million years).
Interpretation of a large seismic data base has made it possible to map the whole
Naust Formation, which comprises sediments deposited on the mid-Norwegian
margin during the last 3 million years. During this period, large quantities of glacially
derived material were transported westward from the Norwegian mainland and the
inner parts of the shelf, and deposited mainly as prograding sediment wedges into a
basin of intermediate depth offshore of Mid Norway. The deposits are more than 1000
m thick over an extensive area, and the shelf edge migrated up to 150 km westwards.
Very-high-resolution bathymetric data has made it possible to study sedimentary
processes related to recently surging glaciers on Svalbard (the last few hundred
years). The data sets also show that mega-scale glacial lineations not only can form
beneath large ice streams, but are also produced over a few years beneath surging
tidewater glaciers lying on deforming sedimentary beds.